ENellipse {EnQuireR} | R Documentation |
This function allows to draw ellipses around the categories of a chosen variable.
ENellipse(matP, cluster, resampling="population", iter=500, alpha = 0.05, coord = c(1, 2), eig, cex = 1, color = NULL)
matP |
factorial coordinates from MCA |
cluster |
chosen categorical variable |
resampling |
If "population", the resampling is done within the whole dataset. If "cluster", it is done within the clusters |
iter |
number of iterations for the Bootstrap method, by default iter=500 |
alpha |
the confidence level of the ellipses. By default alpha=0.05 |
coord |
selected axes |
eig |
eigenvalues of the MCA |
cex |
graphical option: character size |
color |
graphical option: ellipses' colours |
This function can be used to draw ellipses around the centers of gravity of each cluster, when the chosen categorical variable is the variable obtained after the cluster analysis.
Jerome Bouche jerome.bouche@yahoo.fr
Marine Cadoret marine.cadoret@agrocampus-ouest.fr
Gwenaelle Fournier gwenaelle.fournier@gmail.com
Olivier Fournier olivier.fournier76@gmail.com
Francois Le Poder francois.lepoder@gmail.com
## Not run: data(tea) res.enmca=ENMCA(tea[,1:18]) x<-res.enmca$MCA$ind$coord[,1:2] b<-res.enmca$data[,ncol(res.enmca$data)] ENellipse(matP=x, cluster=b, resampling="population", iter=500, alpha = 0.05, coord = c(1, 2), eig=res.enmca$MCA$eig, cex = 1, color = NULL) ## End(Not run)